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PersistenceManager manager = factory.getPersistenceManager();

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package com.onyxdevtools.quickstart.entities;

import com.onyx.persistence.ManagedEntity;
import com.onyx.persistence.annotations.*;
import java.util.Date;

@Entity
public class Person extends ManagedEntity
{

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Person person1 = new Person();
person1.setFirstName("John");
person1.setLastName("Elway");
person1.setDateCreated(new Date());

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@Attribute
@Identifier(generator = IdentifierGenerator.SEQUENCE)
private Integer id;

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manager.saveEntity(person1);

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Person retrievedPerson = (Person) manager.findById(Person.class, savedPerson.getId());
System.out.println("Person " + retrievedPerson.getId() + " saved successfully");

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Random randomNumberGenerator = new Random();

Collection<RandomNumber> numbers = new LinkedList<>();

for(int i=0; i < 1000; i++){
    RandomNumber number = new RandomNumber();
    number.setNumber(randomNumberGenerator.nextInt(100));
    numbers.add(number);
}

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manager.saveEntities(numbers);

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Query query = new Query();
query.setEntityType(RandomNumber.class);
List<RandomNumber> savedNumbers = manager.executeQuery(query);

System.out.println(savedNumbers.size() + " random numbers saved");

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Person person1 = new Person();
person1.setFirstName("John");
person1.setLastName("Elway");
person1.setDateCreated(new Date());

Person savedPerson = (Person) manager.saveEntity(person1);